Paper folding



(No Model.) 2 Sheets-Sheet 2.

. T. O. DEXTER. PAPER FOLDING, PASTING, AND TRIMMING ATI'AGHMENT FOR PRINTING PRBSSES.

Patented Oct. 30., 1883.

c a m w PM a w w m M m m m P i m n P N (No Model.) 2 Sheets-Shget 1. T. C. DEXTER.

PAPER FOLDING, PASTING, AND TRI MMING ATTACHMENT FOR PE PRESSES INTING Patented Oct. .30, 1883.

I UNITED STATES PATENT QFF CE.

TALBOT c. DEXTER, or mes .MOINES, IOWA.

PAPER FOLDING, PASTING, AND TRIMMING ATTACHMENT FOR PRlNTlNG-PRESSES.

SPECIFICATION forming part of Letters Patent No. 287,422, dated October 30, 1883.

Application filed June 16, 1882. (No model.)

To all whom it may concern.-

' Be it known that I, TALBOT O. DEXTER, of Des Moines, in the county of Folk and State of Iowa, have invented an Improved Paper Folding, Pasting, and Trimming Attachment for Printing-Presses, of which the following is a specification.

My invention relates to the machines patented by me September 20, 1881, No. 247 ,17 8, and June 5, 1883, No. 279,083; and it consists, first, in combining a guide and stops with the free end of a folding-blade, to steady and restrict its movements relative to the foldingrollers and printed sheets doubledthereby; second, in combining an adjustable collar and cushioned stop with a folding-blade, to regulate and restrict its dropping or downward motion relative to the folding rollers; third, in forming and combining toothed and grooved paste-distributing wheels with a paste-cup, to make lumps fine and apply paste evenly; fourth, in combining the paste-distributing wheel, a friction-wheel, and a spring, to co-operate with'the folding-rollers and folding-blade in applying paste at regular intervals; fifth, in forming and combining rollers and a feed device with the trimming mechanism, to carry off the clippings as rapidly as the sheets are cut, to prevent the Waste paper from clogging the machine, all as hereinafter fully set forth.

Figure 1 of my accompanying drawings is a side view of a section of a printing-press and my sheet delivering, folding, pasting, and trimming mechanism. Fig. 2 is a vertical transverse section of Fig. 1, taken through the line 00 :20, looking toward the rollers 3 and 4. Fig. 3 is a top view. Fig. 4 is a detail View of my guide and stops for steadying and restricting the movement of the folding-blade relative to the folding-rollers. Figs. 5, 6, and 7 are detail views of my paste-cup and distributing-wheels and the operating mechanism thattransmits motion from the folding-rollers to the paste-wheels. Fig. 8 is a side view of my attachment or mechanism for carrying off the waste paper clippings cut from the sheets.

Jointly considered, these figures clearly illus-" trate the construction and operation of my complete invention.

A represents the frame of a printing-press, and B the frame that supports my paper folding, pasting, and trimming mechanism.

- through which a doubled sheet is passed down Nos. 1 and 2 are a pair of folding-rollers,

ward to produce the first fold and folio.

a is one of a series of endless sheet-carrying tapes, connected with the press by means of a .rotating shaft, b, that is connected with the press-frame by means of bearings formed in or attached to the frame and a wheel or driver pulley, c, fixed to the shaft 6, and connected with the folding mechanism by means of the directing-rollers, combined with the frame B.

dis a roller located at right angles to the rear end of the folding-rollers Nos. 1 and 2, to receive the endless tapes. d is aroller located at the opposite ends of the folding-rollers, in such a manner that the tapes a passed under it will be directed thereby from the tops of the driver-wheels c, to pass backward and forward parallel to the folding-rollers Nos. 1 and 2 by the aid of a third roller, d, located immediately underneath the roller d.

f is an auxiliary frame fixed to the end of the'frame B, to support the rollers d and d in bearings formed in or attached thereto.

12 is an adjustable roller, connected with the auxiliary frame f by means of projections f, that extend at right angles from the ends of the frame, and are perforated to admit the top ends of roller-bearersf to be passed through upward and adjustably fastened by means of set-screws f.

d is a tape-directing roller, that has its to the front end of the folding-blade.

g is a guide fixed to the frame, to extend horizontally and at right angles to the blade bearings fixed to the frame A of the press in extension 9 in such a position relative to the blade and the folding-rollers Nos.'-1'and 2 that it will touch the extension 9 and steady its up and down motions.

Nos. 1 and 2 in such amanner that the descent of the front and free end of the folding-blade will be restricted thereby, and prevented from striking and damaging the rollers and the g is a V-shaped and cushioneds'topfixedto the journal boxes or bearings of the rollers 10o intervals to allow the printed sheets to be carsheets of paper doubled downward between 1 the paste and aid in keeping the paste in a the rollers by the action of the blade.

his one of a series of rods spanned across the top ofthe folding mechanism, and supported by bars fixed to the frame B in such positions relative to the folding-rollers Nos. 1 and 2, the folding-blade, and the tapes a that they will protect the sheets as they are being doubled by the blade, and also prevent them from turning upward at their edges and corners, to avoid irregular creases being made in the sheets as they pass through between the rolleis.

h is a blade-operating post or arm, by means of which the folding-blade is lifted at regular ried under it by the tapesa and placed in proper position relative to the rollers Nos. 1

' and '2, as required, to be doubled in their centers by the descent of the folding-blade. The fol ding-blade is adjustably connected with the top portion of the arm h by means of a perforation in the blade and a set-screw, h, and the in the bottom.

arm h is supported in a vertical position bya bearing, h, that is fixed to the frame B. A section of the arm h has a screw-thread, upon which section is placed a nut or collar, h, in such a manner that it can be readily raisedor lowered relative to the folding-blade and the stop and bearing h, as required to regulate and restrict the stroke of the blade relative to the folding-rollers Nos. 1 and 2, by simply turning it on the arm h. Leather washers i 'i, or other suitable cushioning devices, are fixed to the lower side of the col1arh, to engage the top surface of the bearing and stop h", to prevent noise and concussion.

k is a paste-cup, preferably in the form of a miniature keg, cast complete in one piece. It has a slot in its bottom and wheel-bearings k projecting downward on each side of the slot k is an arm formed on or fixed to the bottonrof the paste-cup, to adapt the cup to be detachably fixed to the foldingblade by means of .a screw or bolt, as clearly shown in Fig. 5.

-k is a metal wheel fixed to a shaft that extends through the bearers k in such a manner that the top portion of the wheel will project up into the paste cup through theslot in the bottom of the cup. This wheel is made of cast metal, and has a continuous groove in the center of its periphery and notches to produce toothed edges atv the sides of the continuous annular groove in the periphery. A cord or other suitable paste absorbing material is placed in the continuous groove, to apply the paste to the sheets as they are beingfolded into folios. The toothed periphery of the wheel,

proper consistency for even distribution to the printed sheets. It also has a continuous groove in its plain periphery, as clearly shown in Fig. 7. This second wheel, kw, may be dispensed with, or the relative positions of the two wheels may be changed to accomplish the results contemplated.

m is the shaft to which the paste wheel k' is fixed. It extends from the paste-cup parallel with the folding-blade to the end of the folding-roller No. 1.

n is a friction-wheel fixed to the end of the shaft m.

n is a spring-bearer, (clearly shownin Fig. 6,) by means of which the shaft m is detachably fixed to the folding-blade by means of a screw or bolt. When the folding-blade descends to double a sheet between the foldingrollers, the paste distributing wheel k will engage the printed sheet and the friction-wheel n will engage the surface of the roller No. l to be actuated thereby, to rotate the shaft on and the paste-wheels at regular intervals, as required to place a line of paste on each folio that is formed by means of the reciprocating folding-blade and the rotating folding-rollers Nos. 1 and 2.

Nos. Band 4 (clearly shown in Fig. 8) are two short rollers placed in parallel position relative to each other and the cutting-roller No.

manner that the edges of the sheets, as they are moved by the carrying-tapes, will pass over them while being trimmed, and the waste paper strips that are cut oil will follow in the same direction; but to get the clippings out of the way, to prevent them from clogging the machine, I carry them off downward by means of the rollers Nos. 3 and 4 and a feed device adapted to press'the clippings downward into thebite of the rollers, which are revolved toward each other by means of gearing connected with the driving mechanism of the machine.

8 is an elbow-shaped arm connected with the driving mechanism by means of a cam at its lower end, in such a manner that it will rise and fall at regular intervals, and will, by means of an adjustable plate or pushing device, t, carried on its horizontal portion, strike and press downward on the strips of paper clippings to start them in passing through between the rollers and down out of the way of I20 the folding mechanism, to drop into a pit or suitable receptacle, from whence they can be removed at convenience. The sheets are carried through the machine successively by means of endless tapes, as shown in my prior patent referred to, and the clippings are proimproved machine will be obvious to any one familiar with my previously-patented machine designated. in the preface of this specification.

I am aware that a paste-roller has had ratchet-teeth on its periphery and cavities in its side faces; but forming notches and teeth in the opposite edges of the periphery and a continuous groove in the center of the periphery is novel and greatly advantageous in making paste fine and distributing it in straight lines across a sheet by means of an elastic pasteabsorbing material secured in the continuous groove.

I claim as my invention- 1. The folding-rollers Nos. 1 and 2, the folding-blade having an extension, 'g, the fixed guide 9, and a fixed stop, 9, arranged and combined as and for the purposes set forth.

2. A folding-blade carrier, h, having a screwthreaded section, a fixed bearer and stop, h, and an adjustable nut or collar on said screwthreaded section of the vertical arm and carrier h, arranged and combined relative to a pair of horizontal folding-rollers substantially as shown and described, to operate in the manner set forth, for the purposes specified.

3. A paste or brush wheel formed of metal, and having notches or teeth in its periphery and on opposite sides of a continuous annular groove filled with a flexible cord 'or othersuitable elastic and paste-absorbin g material, substantially as shown and described, and adapt- 5. The attachment for carrying off waste paper strips or cuttings from the line of advance of a moving sheet in a paper folding and trimming machine, and which consists of an auxiliary frame, 0', anelbow-shaped arm, 8, and an adjustable pushing or feeding device, It, in combination with a pair of folding-rollers and the trimming-roller No. 5, substantially as set forth.

6. The rollers Nos. 3 and 4, the elbowshaped arm 8, having an adjustable feed device t, on its horizontal portion, arranged and combined relative to a driving-shaft having a cam to engage and lift the arm at regular intervals, and a pair of paper-trimming rollers, substantially as shown and described, to operate in the manner set forth, for the purposes specified.

\ TALBOT C. DEXTER.

Witnesses:

A. F. SPERRY, W. L. DEWEY. 

